Synthesis of magnetic alginate beads based on magnesium ferrite (MgFe2O4) nanoparticles for removal of Sr (II) from aqueous solution: kinetic, equilibrium and thermodynamic studies

被引：20

作者：

Yakout, Sobhy M. ^{[1
,2
,4
]}

Hassan, Mohamed R. ^{[3
]}

Aly, Mohamed, I ^{[1
,2
]}

机构：

[1] Atom Energy Author, Hot Labs, PO 13759, Cairo, Egypt

[2] Atom Energy Author, Waste Management Ctr, PO 13759, Cairo, Egypt

[3] Atom Energy Author, Nucl Res Ctr, PO 13759, Cairo, Egypt

[4] King Saud Univ, Biochem Dept, POB 2455, Riyadh 11451, Saudi Arabia

来源：

WATER SCIENCE AND TECHNOLOGY | 2018年 / 77卷 / 11期

关键词：

adsorption; isotherm; magnetic alginate; strontium; thermodynamic study; ACTIVATED CARBON; ADSORPTION THERMODYNAMICS; P-XYLENE; NANOCOMPOSITE; SORPTION; BENZENE; TOLUENE; IONS; DYES;

D O I：

10.2166/wst.2018.228

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Novel magnetic alginate beads (MagAlgbeads) have been developed by incorporation of magnesium ferrite (MgFe2O4) in alginate beads with the aim of using them in the removal of strontium from aqueous solution. MagAlgbeads were characterized by transmission electron microscopy, scanning electron microscopy, X-ray fluorescence and Fourier transform infrared spectroscopy. The adsorption of strontium onto MagAlgbeads were found to depend on pH and strontium removal increases with increasing pH until pH is 6. Strontium adsorption kinetics run through pseudo-second-order model. Thermodynamically, strontium adsorption was endothermic and spontaneous. Langmuir isotherm gave good fitting for strontium removal with adsorption capacity of 505.5 mg/g. These results proved that the prepared MagAlgbeads are very efficient material for strontium adsorption.

引用

页码：2714 / 2722

页数：9

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